Thanks Eddy, I have tried to explode thinking it will work, but it's still a normal line after explode. I have also tried with Corel Draw, to convert the lines to dots, but I didn't had any luck there either, on the dxf export I got normal lines in cambam

Second step (drilling) done Now to find some small nails, than the kids will get some colorful strings from their grandpa, and start the hard work

This method DRAW - POINTLIST - STEP AROUND GEOMETRY solved my issue in seconds, very very easy.. I think I lost more time in Corel trying to export the dotted line than it took to actually drill the holes on the CNC

Back when my grandson was five I decided to make him a set of wooden blocks from 3/4" x 1-1/2" poplar in lengths of 1-1/2", 3", 4-1/2", 6", and 12" with the 3" being the largest quantity. My reasoning was that basic blocks encourage creativity but the biggest problem is that you never have enough to build that house or castle or race track. So this set in a fitted wood box is over 800 pieces!

So we built towers all the way to the ceiling and knocked them down with the RC cars. He uses them like dominoes running all around the house and then lets them fall in a cascade. He builds ramps for his model cars. At 14 he still pulls them out and plays with them.

Cutting them up took a couple hrs. I could not find a fast way to round the corners. I wound up doing 20 at a sitting with fine sandpaper for MONTHS until they were all done!